IndentationError: expected an indented block after 'with' statement on line 4

这个错误通常发生在Python代码中，当你在一个with语句块中使用了一个缩进错误时，就会出现这个错误。

with语句块用于管理资源（例如文件或网络连接），在with语句块结束时自动关闭资源。因此，在with语句块中，你需要缩进代码块来指示代码是在with块内运行的。

例如，如果你正在尝试打开一个文件，你需要使用with语句块来确保文件在使用完后自动关闭：

with open('myfile.txt', 'r') as f:
    contents = f.read()

在这个例子中，第4行是缩进的，因为它是在with块内运行的。如果你没有缩进这一行，就会出现IndentationError错误。

因此，你需要检查你的代码，并确保所有with语句块中的代码都正确缩进。

相关问题

IndentationError: expected an indented block after 'with' statement on line 12

This error occurs when you are using the "with" statement in Python, but you have not properly indented the block of code that follows it. The "with" statement is used for working with context managers, which are objects that define how to enter and exit a context.

To resolve this error, you need to make sure that the block of code following the "with" statement is properly indented. Here is an example:

with open('file.txt', 'r') as f:
    for line in f:
        print(line)

In this example, the block of code that follows the "with" statement is indented with four spaces. This is the standard indentation in Python. You should make sure that your code follows this convention to avoid the "IndentationError" in the future.

IndentationError: expected an indented block after 'with' statement on line 1

这个错误通常是因为你在使用 Python 的 with 语句时，没有缩进。with 语句需要在其后面加上一个缩进的代码块，来指示 with 语句所要操作的代码范围。以下是一个使用 with 语句的例子：

with open('file.txt', 'r') as file:
    data = file.read()
    print(data)

在这个例子中，我们使用 with 语句打开一个文件，读取其中的内容，并将内容打印出来。需要注意的是，代码块需要缩进，才能正确执行。如果不缩进，就会出现类似于 "IndentationError: expected an indented block after 'with' statement on line 1" 的错误。